Mission-Critical Systems Admin & Help Desk (TS/SCI)

Peraton; Chantilly (VA); On-site; USD 112,000 - 179,000; Full time

Benefits offered by this job

25 days PTO accrued annually

Subsidized employee benefits coverage

Discretionary bonus plan

Job summary

Peraton is seeking a Systems Administrator / Help Desk Support Specialist to deliver hands-on technical support, system administration, and troubleshooting that keeps mission-critical infrastructure running reliably and securely for end users.

You will provide Tier 1/2 help desk support, install, configure, and maintain workstations and servers, troubleshoot issues, and perform routine system administration tasks while supporting RMF/NIST compliance.

Qualifications

• BS/BA degree with 5+ years of experience or MS/MA with 3+ years.
• Active TS/SCI clearance with polygraph eligibility.
• DoD 8570/8140-compliant certification (e.g., Security+) or ability to obtain shortly after hire.
• Windows/Linux experience and Active Directory proficiency.
• Experience with ticketing systems and ITSM processes.
• Strong customer service and communication skills.

Responsibilities

• Provide Tier 1/2 help desk support and resolve user tickets promptly.
• Install, configure, and maintain workstations, servers, and peripherals.
• Troubleshoot hardware, software, network, and connectivity issues.
• Perform routine system administration tasks including provisioning, access management, and patching.
• Support RMF/NIST 800-53 compliance requirements and documentation.
• Document incidents, resolutions, and SOPs in the ticketing system.
• Escalate complex issues to senior admins or engineering teams as needed.
• Assist with monitoring, backups, and routine maintenance.
• Support onboarding/offboarding and account deactivation for users.

Skills

Customer service

Communication

Problem solving

Education

BS/BA degree

MS/MA degree

Tools

Active Directory

Ticketing system

Job description

Peraton is seeking a Systems Administrator / Help Desk Support Specialist to deliver hands-on technical support, system administration, and troubleshooting that keeps mission-critical infrastructure running reliably and securely for end users.

You will provide Tier 1/2 help desk support, install, configure, and maintain workstations and servers, troubleshoot issues, and perform routine system administration tasks while supporting RMF/NIST compliance.